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|
# ptrace _____________________________________________________
#
# int sys_ptrace(long request,
# long pid,
# long addr,
# long data)
#
@define _SYSCALL_PTRACE_NAME
%(
name = "ptrace"
%)
@define _SYSCALL_PTRACE_ARGSTR
%(
argstr = _ptrace_argstr(request, pid, addr, data)
%)
@define _SYSCALL_PTRACE_REGARGS
%(
request = long_arg(1)
pid = int_arg(2)
addr = ulong_arg(3)
data = ulong_arg(4)
%)
@define _SYSCALL_PTRACE_REGARGS_STORE
%(
if (@probewrite(request))
set_long_arg(1, request)
if (@probewrite(pid))
set_int_arg(2, pid)
if (@probewrite(addr))
set_ulong_arg(3, addr)
if (@probewrite(data))
set_ulong_arg(4, data)
%)
probe syscall.ptrace = dw_syscall.ptrace !, nd_syscall.ptrace ? {}
probe syscall.ptrace.return = dw_syscall.ptrace.return !,
nd_syscall.ptrace.return ? {}
# dw_ptrace _____________________________________________________
probe dw_syscall.ptrace = kernel.function("sys_ptrace").call ?,
kernel.function("compat_sys_ptrace").call ?
{
@_SYSCALL_PTRACE_NAME
request = @__compat_ulong($request)
pid = __int32($pid)
addr = @__compat_ulong($addr)
data = @__compat_ulong(@choose_defined($data, $cdata))
@_SYSCALL_PTRACE_ARGSTR
}
probe dw_syscall.ptrace.return = kernel.function("sys_ptrace").return ?,
kernel.function("compat_sys_ptrace").return ?
{
@_SYSCALL_PTRACE_NAME
@SYSC_RETVALSTR($return)
geteventmsg_data = _ptrace_return_geteventmsg_data(@entry($request), @entry($data))
arch_prctl_addr = _ptrace_return_arch_prctl_addr(@entry($request), @entry($addr), @entry($data))
}
# nd_ptrace _____________________________________________________
probe nd_syscall.ptrace = nd1_syscall.ptrace!, nd2_syscall.ptrace!, tp_syscall.ptrace
{ }
probe nd1_syscall.ptrace = kprobe.function("sys_ptrace") ?,
kprobe.function("compat_sys_ptrace") ?
{
@_SYSCALL_PTRACE_NAME
asmlinkage()
@_SYSCALL_PTRACE_REGARGS
@_SYSCALL_PTRACE_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.ptrace = kprobe.function(@arch_syscall_prefix "sys_ptrace") ?,
kprobe.function(@arch_syscall_prefix "compat_sys_ptrace") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_PTRACE_NAME
@_SYSCALL_PTRACE_REGARGS
@_SYSCALL_PTRACE_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_PTRACE_REGARGS_STORE %)
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.ptrace = kernel.trace("sys_enter")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_ptrace"), @const("__NR_compat_ptrace"))
@_SYSCALL_PTRACE_NAME
@_SYSCALL_PTRACE_REGARGS
@_SYSCALL_PTRACE_ARGSTR
},
{
%( @_IS_SREG_KERNEL %? @_SYSCALL_PTRACE_REGARGS_STORE %)
}
probe nd_syscall.ptrace.return = nd1_syscall.ptrace.return!, nd2_syscall.ptrace.return!, tp_syscall.ptrace.return
{ }
probe nd1_syscall.ptrace.return = kprobe.function("sys_ptrace").return ?,
kprobe.function("compat_sys_ptrace").return ?
{
@_SYSCALL_PTRACE_NAME
@SYSC_RETVALSTR(returnval())
geteventmsg_data = 0
arch_prctl_addr = 0
}
/* kernel 4.17+ */
probe nd2_syscall.ptrace.return = kprobe.function(@arch_syscall_prefix "sys_ptrace").return ?,
kprobe.function(@arch_syscall_prefix "compat_sys_ptrace").return ?
{
@_SYSCALL_PTRACE_NAME
@SYSC_RETVALSTR(returnval())
geteventmsg_data = 0
arch_prctl_addr = 0
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.ptrace.return = kernel.trace("sys_exit")
{
__set_syscall_pt_regs($regs)
@__syscall_compat_gate(@const("__NR_ptrace"), @const("__NR_compat_ptrace"))
@_SYSCALL_PTRACE_NAME
@SYSC_RETVALSTR($ret)
geteventmsg_data = 0
arch_prctl_addr = 0
}
|
